Wall construction



Patented May It), 1927.

UNlTEi) STATES PATENT OFFICE.

WALL CONSTRUCTION.

Application filed September 30, 1924, Serial No.

This invention relates to concrete block wall construction generally but: especially to such walls wherein a special interlocking precast block is used and locked in wall formation by the pouring of concrete between the assembled blocks.

The principal objects of my invention are to provide awall block which may be made of any desirable material but particularly adaptedi'or casting of concrete, which will take the place of concrete forms, and which will interlock to form a wall of minimum thickness or which may be assembled to form a wall of any desired thickness by the simple addition of a spacing unit.

Also such a block which is adapted to the forming of concrete posts and columns.

In the drawings hereto Figure l is a perspective view of my wall block and Figure 2 is a perspective view of my spacing tie block.

Figure 3 is a perspective view of a portion 01 a thick spaced wall constructed from my blocks and Figure 4c is a plan view of a minimum thickness of wall as formed with my wall block only without the spacing tie blocks, and Figure 5 shows a post made of my blocks.

In the drawings the wall block is a simple rectangular oblong slab l with a pair of look ing ribs 2 formed on one side thereofrunning across the narrow way of the block and provided with confronting hook like tongue and groove edges 3.

The spacing tie block is a rectangular slab 4- having grooves 5 at opposite edges adapted to receive the tongue of the wall slab to interlock therewith when assembled therewith as shown in Figure 8.

The position of the ribs 2 on the wall slab is of particular importance as they are spaced in relation to the ends of the slab so that identical slabs may be placed face to face and interlocked in the position shown in Figure 4 and in which position the ends 740,769, and in New Zealand January 28, 1924.

of the slabs will be in abutting relation as shown, and it will be observed that the slabs are symmetrical so as to permit of reversing to turn'either edge up without changing the interlocking relation, thus providing for the utmost simplicity in assembling.

The thickness of the wall depends on the length of the spacing slabs and it is proposed to make them of several lengths to meet dift'erent standards of wall thickness.

The spacing slabs are also used as end members as shown at 4 in Figure 8, but for those used within the wall a notch (Sis preferably formed on one or both of the upper.

and lower edges to pass horizontally ar ranged reinforcing bars 7 for tying the walls horizontally together.

Some of the wall slabs 1 are cut off adjacent the ribs 2 as shown at l in Figure 3 so as to form a flush joint with the tie slab 4 at such end positions, and a further modified slab is shown in Figure 5 at 1 wherein the ribs are flush with both ends of the slab so as to adapt the slabs to the forming of columns or posts as shown in this figure.

After assembling the slabs into any of the forms shown wet concrete is poured into the spaces as indicated at S to lock the slabs and any reinforcing bars used into one solid mass.

In the case of constructing posts with my slabs reinforcing bars may be introduced as indicated at 9.

I claim:

In a wall, a double row of slabs, each slab consisting of a body and a pair of spaced vertical hooklike ribs extending therefrom towards the opposite slab, said ribs being spaced from the ends of the body, each rib hooked with one rib of an opposite slab,- said hook like ribs of eachslab extending in opposite directions and all the ribs being substantially parallel to each other.

. 7 JOHN MCKENZIE. 

